Subversion Repositories openrisc_2011-10-31

# bittest.s

#

# Bit operation instructions (BCLR, BNOT, BSET, BTST) should not be placed in IU.

# If the user specifically indicates they should be in the IU, GAS will

# generate warnings. The reason why this is not an error is that those instructions

# will fail in IU only occasionally. Thus GAS should pack them in MU for

# safety, and it just needs to draw attention when a violation is given.

        nop -> ldw R1, @(R2,R3)

        nop || ldw R6, @(R5,R4)

        nop -> BSET R1, R2, R3

        nop <- BTST F1, R2, R3

        nop || BCLR R1, R2, R3

        nop -> BNOT R1, R2, R3

        BNOT r1, r2, r3 -> nop

        bset r1, r2, r3 || moddec r4, 5

        bset r1, r2, r3

        moddec r4, 5

        bset r1, r2, r3

        joinll r4, r5, r6

        joinll r4, r5, r6

        bset r1, r2, r3